I found this today on Bing:
Clicking leads you to bingsearch://app/search?q=ghhfgfgdgfdgh&FORM=HDRW8P, which is not any known or sensible protocol and consequently displays as a dead link. What is this?

1 Answer
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There is a chance that it's related to the bing app that is on a Windows 8 computer. I've noticed several times that when using bing on a Windows 8 device that is suggests using the app. Although I haven't seen that particular link.

@kinokijuf It’s a link to the Windows 8 Bing App, so basically that link opens the Metro Bing App with the search query the user inserted. And probably it was a bug that made it appear even if you are/were not using Windows 8.
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AlexFeb 6 '13 at 18:28